UDK texture popping

Wonkey · Aug 2011

When I get closer to static mesh when playing in viewport in UDK, my textures seem to pop. I suspect it is mip mapping, but when I look other maps, they don't seem to pop this close-or at least as noticeably.

One of the frustrating things, it that it doesn't do it with every light build-and it doesn't seem to matter the quality of the build.

another distance popping http://i.imgur.com/FL7nL.gif

Any ideas on how to fix this?

Oniram · Aug 2011

generally the quality of lighting will never make a noticeable difference. what do your UVs/lightmap look like for this?

Wonkey · Aug 2011

channel 1(0)

channel 2 (lightmap)

channel 2 nothing is over lapped

Wonkey · Aug 2011

oh, and they are 1024^2 but didn't think I needed to post them that big.

Parkar · Aug 2011

I think you just need to up the lightmap resolution. The default is 32 and if you have not changed it you will definatly have bleeding issues with that UV map especially when it goes to a lower mip.

I asume you mean that the textures are 1024 and not the light map because it definatly does not look like a 1024 lightmap.

Oniram · Aug 2011

one thing i try to make it a habit of also (this may or may not help). dont build lights.. or generally anything. with the default blue checker on BSPs. it casts bounce lights the same way emissive static lights do, and can often mess with your model.

Wonkey · Aug 2011

I have the Light map res to 256 on those models. I tried putting a grey material on the walls, and that didn't seem to help. So... yeah, textures are wip obviously, but until it is fixed here it is

http://dl.dropbox.com/u/4593834/DentBlock.zip

made in June UDK
place in content folder

rasmus · Aug 2011

This is not a lightmap resolution error, this is a result of non-existant blending between lightmap mips and aggressive streaming of the lower level mips, as far as I know. Adding "-NOTEXTURESTREAMING" as a launch paramater in your UDK shortcut seems to ensure that ligthmaps are always full-res and don't pop down to lower mips. If that alone won't do it (though I think it does), try running with "UseMaxQualityMode=True" in BaseEngine.ini as well. Very annoying until you figure that out though

knak47 · Aug 2011

Looks like the same problem I was having I while back. If it is, Rasmus is right it's a streaming issue, and at least for me setting bUseTextureStreaming to False solved the issue. Here is a link to the thread where this was discussed. http://www.polycount.com/forum/showthread.php?t=81023

Wonkey · Aug 2011

Adding -NOTEXTURESTREAMING to the command line worked. The .ini changes didn't seem to make any difference. It didn't make a difference in playing in the viewport editor. I am going to override the lightmap size on the closest couple doors.

Thank you knak47 and rasmus! I can finally move on!

I will leave the files up for a few days, if anyone has any ideas.

b1skit · Aug 2011

Omg.... Just found this thread, have been plagued by this issue for over a year. I'm doing a larger scene now and this problem was VERY visible, so I finally had to deal with it... THANK YOU

Wonkey · Aug 2011

I also found when using emissive lighting, it makes it a lot worse...

riddlaz · Aug 2011

Thanks for posting Wonkey, I was having similar problems and found the answer in this thread. Props to Rasmus!

UDK texture popping

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